粉煤灰混凝土力学性能及氯离子渗透性试验研究  

STUDIES ON CONCRETE MECHANISM WITH FLY ASH ADDITIVES AND ITS PERMEABILITY EXPERIMENTS OF CHLORIDE ION

作　　者：白雪杉 樊胜利 黄华县[3] 

机构地区：[1]路桥华祥国际工程有限公司,北京100011 [2]山西省吕梁高速公路有限公司,032200 [3]暨南大学力学与土木工程系,广州510632

出　　处：《建筑技术开发》2007年第10期35-37,48,共4页Building Technology Development

摘　　要：比较系统地研究了不同粉煤灰掺量对砂浆的力学性能和氯离子渗透性的影响,分别测定粉煤灰掺量从0到70%的砂浆3d、28d、90d 的抗压强度、抗折强度和离子扩散系数。从试验结果可知,适当粉煤灰掺量能够改善混凝土的力学性能和耐久性,对改善混凝土的韧性尤其显著。Systematically study the influence of varying amounts of fly ash additives on mechanism and permeability of chloride ion for grout. Compressive strength, bending strength and ion diffusing parameters of 3-day, 28 - day, and 90-day are respectively measured in terms of fly ash additives＇amounts from 0 to 70%. The tests show that an appropriate amount of fly ash additives can improve the mechanic performance and endurance ability of concrete, and especially greatly improve concrete＇s ductility.

关 键 词：粉煤灰 氯离子扩散系数 耐久性 NEL法 

分 类 号：TU528.2[建筑科学—建筑技术科学]